Home / 4,875.78-6,728.13-2,986.50

Finding the Fourth Proportional to 4,875.78, 6,728.13 and 2,986.50

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Solution

The fourth proportional to 4,875.78, 6,728.13 and 2,986.50 is: 4,121.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,875.78 : 6,728.13 = 2,986.50 : x
  2. Step 2: Convert to fraction form
    4,875.78/6,728.13 = 2,986.50/x
  3. Step 3: Cross multiply
    4,875.78x = 6,728.13 × 2,986.50
  4. Step 4: Simplify right side
    4,875.78x = 20,093,560.25
  5. Step 5: Solve for x
    x = 20,093,560.25/4,875.78
  6. Step 6: Final answer
    x = 4,121.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.